This has been a problem for Accords in both variants for some time as pointed out in this thread Body, Paint & Styling - Rust on the Sunroof way back in 2012. Honda have addressed the issues by announcing the following warranty extension for the below affected Accords.TSB #SO-08-011-00UK dated 15-01-2015 for all Accord in Saloon and Tourer variant for MY09 models

Affected MY09 models are CU1, CU2, CU3, CW1, CW2 & CW3

How to check your car is MY09 VIN check Your Accord's Model Year of Production
Symptom
Corrosion was found on sunroof glass frame.
Cause
An insufficient amount of the glass bond had been applied at the sunroof glass assembling process, resulting in a gap. The resulting gap allowed salt water to corrode the sunroof frame .

Countermeasure
The number of slits at the sunroof glass seal was reduced and the bond application amount was increased to improve the adhesiveness of the glass seal to prevent water intrusion.

If the sunroof was replaced a few years ago, would it have been replaced with the latest type? ie a sunroof with the correct amount of glass bond? Mine was replaced in 2012, by the supplying dealer after I had read about the rust thread on this site. Am concerned that my rusty sunroof was replaced with a sunroof that may rust over time?

I can safely say that my at least was changed with same sunroof and not the latest type.
I asked same question when my was installed.
Will the rust occur again and was told that there is no guarantee it won't and to clean it as much as possible to prevent it.

Replaced mine last year after much debating with customer relations but as you all would have seen I had no luck and had to pay up and now I read this!!. I am away to check vins as mine is also an 09 plate and if it is Honda customer relations better be prepared for the abuse they are going to receive. What do you lot think would be the chance of Honda refunding me?, I run a buisness myself albeit joinery but you would think for customer relations this would not be a problem. I will go and check and let you all know how I get on.

Well, pleased to say Honda today have informed me that they will repay me in full, glad to see Honda have finally accepted that there was a fault with the part. It is just a shame it had to go a far as it did because the attitude of my local dealer West End Honda was absolutely crap, couldn't care less about the problem, didn't even attempt to fight it on my behalf, full service history, sold the car from new and all corrosion stamps done by them and not a bit bothered about customers satisfaction. I can safely say I only now use them out of sheer desperation and even source my parts online now and believe it or not it's cheaper. The lad behind the service counter who purchased my CL7 before it reached the forecourt couldn't believe all my receipts in the folder were for other Honda dealers for parts considering there my local, kind of sums it up really. So to sum it up, Honda good, cars great, dealers (some) absolutely rubbish.

I've just recently acquired an Accord which is in the VIN range mentioned above, noticed the corrosion while giving the car a good polish. Nearest dealer is Phoenix Honda in Stirling and when I called them yesterday about the Service Bulletin they denied all knowledge of issues with corrosion on the MY09 Accord. Its booked in for them to have a look in a few weeks and think they are going to take photo's etc and pass them on to Honda. I even offered to give the the TSB Reference and they were not interested.

I had the same problem. It wasn't till I showed the a copy of the TSB that they decided to look at the sun roof. They photographed it and, after contacting Honda, told me a new sun roof was on order. It took two months to arrive but it's fitted now and all free of charge under the 3+4 year extended warranty for this issue.Result.

Thanks for the replies. Spoke to Honda Customer Service who confirmed the TSB and also that they were going to get in touch with the dealership concerned about it. Would HCS give a copy of the TSB to customers if they requested them or are they for dealerships only. If that is the case does anyone have a copy I could use when I go to the dealer?

I had the same problem. It wasn't till I showed them a copy of the TSB that they decided to look at the sun roof. They photographed it and, after contacting Honda, told me a new sun roof was on order. It took two months to arrive but it's fitted now and all free of charge under the 3+4 year extended warranty for this issue.Result.

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The TSB is as follows:- TSB#SO-08-011-00UK. Dated15-01-2015 for all Accord in saloon and tourer variant for MY09 models.